Hearing aid



FIG. 1 is a front elevational view of a Hearing Aid, showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a side elevational view thereof, in use condition.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a Hearing Aid, as shown and described. 